RIHANNA was left "roamin da streets" early this morning after she and 300 others were evacuated from her London hotel after a fire broke out.

The 24-year-old singer tweeted news of the blaze to her 21 million Twitter followers, posting a picture of herself in the back of a black cab.

"Roamin da streets since 6am! Fyah in da telly #evacuationlife," she wrote alongside the picture.

The Barbadian beauty also posted a picture of a fire engine outside the luxury Corinthia hotel, with the words "Fire in the Telly #evacuationlife".

The fire brigade said the alarm was raised at 6.22 am (3.22pm AEST) and 10 firefighters dealt with the blaze in the lift shaft on the seventh floor of the luxury Corinthia Hotel. There were no reports of injuries.

The star is in London after headlining Radio One's Hackney Weekend on Sunday, with RiRi set to take to the stage again next weekend for the Wireless Festival in Hyde Park.

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